Frank w



(N0 Model.)

P. W. LESLIE.

ENVELOP SEAL.

No. 590,325. Patented S'ept.`2l, 1897.

""'"lllllllllllllllll... l mlm.@@fmmuvsm' UNITED STATES PATENT OFFICE.

FRANK IV. LESLIE, OF CHICAGO, ILLINOIS, 'ASSIGNOR OF ONE-HALF TO SAMUELC. KANTER AND ISAAC IWI. RICE, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent N o. 590,325, datedSeptember 21, 1897.

I Application filed December 28, 1896. Serial No. 617,165. (No model.)

To all whom t may concern.-

Be it known thatI, FRANK W. LESLIE, a citizen of the United States,residing at Chicago, Cook county, Illinois, have invented a new anduseful ImprovementY in Envelop-Seals, of which the following is aspecification.

My invention belongs to that class of seals in which two metallic disksare locked or clinched together, engaging the aps of the envelop andsecurely closing it.

It consists of two metallic disks,onc of which has two protruding lugsand the other recesses into which these lugs set, and springfingers overthese recesses, which areforced back by the entrance of the lugs, thelatter being then turned to one side and locked by the spring-iingersspringing back to place as the lugs pass from under them.

Figure l is a plan view of the back of an envelop provided with my seal.Fig. 2 is a plan view of the front with a portion broken away, showingthe locked seal on the inside of the back. Fig. 3 is a view of the backwith the flap opened, showing the 'projecting lugs and the recesses intowhich they iit. Figs. 4 and 5 are enlarged perspective views of the twodisks'.

A represents the envelop; B, the outer disk; C, the inner disk; D, theprojecting lugs; E, the recesses in C, and Ii1 the springfingers upon C.

The disk C is attached in any suitable inanner to the inside of the backof an envelop of the ordinary kind, and is preferably made to engage allof the folds or flaps of it except, of course, the top or outer one,which forms the opening.

The disk lB is attached to the outer flap by the lugs D being insertedthrough the opening d in it.

The recesses in C are exposed to allow of the entrance of the lugs D byhaving the envelop cut away, as shown at c, Fig. 3.

When the envelop is to be sealed, the two disks are brought together,the lugs D entering the recesses E and pressed together until thespring-fingers F are forced back. Then by turning the disk B partiallyaround to the right thevlugs pass off of the spring-fingers and theyspring back into place and the two disks are locked together and cannotbe separated without breaking the seal.

The advantages of this seal are that it occupies very littlespace whenmade of thin material, being but little thicker than the ordinaryenvelop; that it can be securely locked without the necessit)r ofriveting the parts together and thereby damaging the contents of theletter, and that it can be readily applied to the ordinary form ofenvelop. It is obvious also that it may be used upon other similarpackages.

Vhat I claim, and desire to secure by Letters Patent, is-

l. The herein-described envelop-seal consisting of the combination ofthe disk B having the projecting lugs D thereon, the disk C having therecesses E therein, and the springfingers F which said lugs engage whenthey are forced down into said recesses, all substantially as shownanddescribed.

2. The herein-described envelop-seal consisting of the combination ofthe disk B having the projecting lugs D thereon, the disk C having therecesses E therein, and the springfingers F, located at one side of saidrecesses E and extending over them, which said lugs engage when they areforced down into said recesses all substantially as shown and described.

i FRANK W. LESLIE.

Witnesses:

MAX RoBINsoN, LOUIS V. LE MOYNE.

